Sewage smell from washing machine standpipe


  #1  
Old 03-21-18, 07:45 AM
J
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Sewage smell from washing machine standpipe

Looking for suggestions..
Sewage smell coming out of washing machine standpipe.
Drain hose is only a few inches in so itís not blocking trap.
Bleach works for a week then smell comes back.
Smell usually comes a day after wash is done.
Attached is a picture of plumbing in hopes someone can see if anything looks wrong.
Thank you
 
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  #2  
Old 03-21-18, 09:58 AM
Z
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Your setup looks pretty correct. The trap isn't quite right, I would rather see a street ell on the right side of the trap - but I honestly can't see any reason it would really make a difference.

I'd imagine you just have some mold/fungus/gunk down at the bottom of the trap. The bleach helps kill it for a bit, but then washes out and whatever is there just keeps coming back. I don't think it's actually sewer gas, just gunk in the pipe smelling.


Maybe someone here has a good idea on how to clean/scrub it without taking it apart and replacing it.
 
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Old 03-21-18, 10:41 AM
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Only thing I could think of the vent pipe is blocked. If it is the water in trap would siphon out.
 
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Old 03-21-18, 10:41 AM
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The PVC line connected above the trap would need to be confirmed as a vent.
If it were a wet (drain) line from above... it could draw the water out of the trap.
 
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Old 03-21-18, 11:27 AM
J
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Thanks all! These are great ideas that will look into.
 
 

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